721253649374 has 8 divisors (see below), whose sum is σ = 1116779844288. Its totient is φ = 348993701280.

The previous prime is 721253649359. The next prime is 721253649377. The reversal of 721253649374 is 473946352127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721253649377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5816561627 + ... + 5816561750.

It is an arithmetic number, because the mean of its divisors is an integer number (139597480536).

Almost surely, 2^721253649374 is an apocalyptic number.

721253649374 is a deficient number, since it is larger than the sum of its proper divisors (395526194914).

721253649374 is a wasteful number, since it uses less digits than its factorization.

721253649374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11633123410.

The product of its digits is 7620480, while the sum is 53.

The spelling of 721253649374 in words is "seven hundred twenty-one billion, two hundred fifty-three million, six hundred forty-nine thousand, three hundred seventy-four".